Two-billion-year transitional oxygenation of the Earth’s surface
Lyons, T. W. et al. Co‐evolution of early Earth environments and microbial life. Nat. Rev. Microbiol. 22, 572–586…
New Study Fuels Debate Over World-Changing Comet Strike 12,800 Years Ago
Roughly 12,800 years ago, as Earth was emerging from its last great ice age, temperatures in the Northern…